Scale.



N0.s9|,75o.1 Patented Jan. 28, |9021 J. s. c0nTELYou.

S C A L E (Application led May 6, 1901.)

2 Sheets-She'et I.

(No Model.)

l? I Ill-Illlllllll I l EEE-Ems u. wm Sm Patented Jan. 2a, |902.

J. ys. CoRTELYou.

S C A L E (Application filed. May 6, 1901.)

z'sheets-sheet 2.

(NQ Model.)

.www

TNESSES* UNITED STATES PATENT OFFICE.

' JOSEPH S. CORTELYOU, OF NEW YORK, N. Y.

SCALE.

SPECIFICATION forming part of Letters Patent No. 691,750, dated January 28, 1902.

pplioation iiled May 6 1901. Serial No. 58,896. (No model.)

nation device of this class by means of whichA various articles may be weighed according to any of the standard systems, such as the metric system, the avoir'dupois, the troy, or thev apothecary system; and withxthis and otherV objects in view the invention consists of a Ascale constructedl as hereinafter described and claimed. f l

The invention is fully disclosed'in the following specification, of which the accompanying drawings forma part, in which the sepa rate parts of my improvement are designatedl by the same reference characters in each of the views, and in Which- Figure 1 is a right-hand side view of my improved scale; Fig. 2, a plan view thereof; Fig. 3, a partial section on the line 3 3 of Fig. 6; Fig. 4, a right-hand side view of the scalebar on a larger scale than that shown in Fig.

1 and showing the pivotal support thereof in section; Fig. 5, a left-hand side view similar,

to Fig. 4., and Fig. 6a kright-hand side view of a part of the scale-support and showin g a part of the scale-bar and its pivotal support.

In the practice of inyinvention I provide a scale comprising a support 7, which is provided With a top portion 7, which is preferably circular in form Aand provided with a; cover 7b, and the said cover 7l of the topportion 7 of the support 7 is provided with a diametricalslot 7C in line with the scale-bar 8,

kand the top portion 7a of thesupport 7 is preferably slightly enlarged at the oppositel side in line with the scale-bar 8, as shown at 7'1, so as to give room for that portion of the scalebar within said top portion of the support 7.

The scale-bar 8 is provided with a pivotal support 8a j ust Within the right-hand top portion ofl the supportv7, and said scale-bar is provided with a longitudinal slot 8b, in which is placed a screw 9, one end-of which is pro# vided with a transverse support or bearing 10 at the inner end of the scale-bar within the top portion 7a of the support 7 and the other end of which vis provided with a support or bearing l1, which, as shown in the drawings, is placed about midway ofthe scale- 'vbar proper, or that 'part thereof which projects froin the top ofthe support 7.

The screw 9 is free to turn in the supports or bearings 10 and 1l', and said screw passes through the support or bearing 10 and is provided with a milled head 12, whereby it may be turned when desiredandfor the purposes vhereinafter described. The support or bearing lO of the inner :end of the screw 9 is secured in the inner fend 'of the scale-bar and projects laterally therefrom at both sides, as indicated in dotted lines in Fig. 2, and the pivotal support 8? of said 'scale-bar, which has a bearing at 13, alsoprojeets laterally at 'each side of the scale-bar, as indicated in dotted lines in Fig. 2, and connected with the' the lateral side bars 14, as clearly shown in Fig. 3, and the screw 9 passes throughvsaid slide, and the opening in said slide, through which said screw passes, isV threaded to correa spond with said screw.

A counterbalance-weight 16 is also placed on the scale-bar, and the top portion of said lscale-bar passes therethrough, as does also the screw 9, and the opening in the counterbalance-weight, through which `the screw 9 passes, is threaded to correspond with said screw, and said counterbalance-weight is placed at a distance from the pivotal support f.

8 ofthe scale-bar exactly equal to the distance of the slide 15 from said pivotal support, and by turning the screw 9 by means of the milled head 12 .thereof the said slide 15 and the counterbalanceweight 16 will be caused to approach or recede from the pivotal support 8, according to the direction in which said screw is turned, this result being accomplished by reason of the fact that the threads on the opposite ends of the screws 9 are opposite threads, one being a left and the other a right hand thread.

The slide 15 carries a support 17, which is connected therewith by a standard or arm 18, and the support 17 is adapted to receive apan or other receptacle 19, in which the article to be weighed is placed. The slide 15, the support 17, and the pan 19 are exactly counterbalanced by the weight 16, and in order to accomplish this result the said slide and all the parts mentioned which move therewith are made of very light material, such as aluminium or a compound of aluminium with other metal, while the counterbalance 16 is made of very heavy material, and before the parts above described are assembled the scale-bar with the screw 9 are exactly balanced on its support at 8a, this result being accomplished in any desired manner. The scale-bar proper, or that part thereof which projects from the top of the support 7, is wider'vertically than that part thereofwithin the said support, the bottom portion of said scale-bar being extended downwardly in order to accomplish this result, and formed ineach of the sides ofthe bottom portion of the scale-bar proper, or that part thereof which projects from the top of the support 7,is one longitudinal groove 20, and placed thereon is a movable weight 2l. The bottom portion of the scale-bar passes through the weight 2l, and said weight is provided on its opposite sides with inwardly-directed projections which fit in the grooves 20 and hold said body in place on the scale-bar,while allowing it to move freelylongitudinally thereof.

The right-hand side of the scale-bar proper, or that portion thereof which projects from the top of the support 7, is provided below the groove 20, as shown at 22, with a scale according to the avoirdupois system of Weights and above the groove 2O with two separate scales, as shown at 23 and 24, and

.both of which belong-to the troy system of weights, the reason for having two scales ac- Lcording to the troy system of weights being :thatthenumber ot' drams in an ounce is not thesamefas the number of'ounces to the pound, as in the avoidupois system, where sixteen drams make one ounce and sixteen ounces make one pound, in which case one scale can be used for both drams and ounces, and the .scale 23 on the right-hand side of the scale- `20 is placed two scales 26 and 27 according to the apothecary system, the top scale 26 d enoting drams while the bottom scale 27 represents ounces.

In order to weigh according to the separate systems herein referred to, the slide 15 must be placed -in a certain position for each system, and on the opposite sides of the slot 7c in the top plate 7b of the support 7 are placed certain marks which indicate the position in which the support 17 of the pan 19 must be placed when weighing according to the different systems` and it will be understood that the support 17 of the pan 19 is adjusted to various positions by turning the screw 9 by means of the milled head l2, and by means of this operation the counterbalance-weight 16 moves with the support 17, which moves with the slide 15, it being understood that the movement of these parts is always jointly toward or from the pivotal support 8 of the scale-bar. It will also be seen that the arm or standard 18 of the support 17, which connects said support with the slide 15, is provided with a vertically-arranged index-mark 28, and this index-mark is exactly the same on both sides of said sta-ndard or arm.

The index-marks on the top plate 7b of the scale-support, and with which the index-mark 28 of the pan-support must register in weighing according to the separate systems, are indicated in Fig. 2 on the opposite sides of said slot 7. The said indexmarks on the right-hand side of the slot 7c are designated, counting from the pivotal support of the scale-bar backwardly, by the reference-numerals 30, 31, 32, and 33, and the index-marks on the left-hand side of the slot 7, counting from the pivotal support ofthe scale-bar backwardly, are designated by the reference-numerals 34C, 35, 36, and 37. The index-mark 30 represents the position of the index-mark 28 on the pan-support 17 when weighing according to the avoirdupois system and when heavy articles are to be weighed and it is not desired to determine the weight of such articles in less than ounces, while if it be desired to determine minutely the weight ot` such articles in less than ounces the support 17 will be adjusted so that the index-mark 28 thereon will register wit-h the index-mark 33 on the top plate 7b of the scale-support. In the first of the above cases the scale 22 or the numerals thereof represent pounds and the subdivisions'represent ounces, while in the second instance the numerals on said scale represent ounces and the subdivisions drains.

In weighing according to the troy system, in which two scales are employed, if it be desired to weigh material Where a reading of less than ounces is not required the bottom scale 24 is employed and the numerals of said scale represent pounds,while the subdivisions represent ounces it being understood that the pan-support is moved so that the index-mark 28 registers with theA index-mark 31 on IOO IIO

rov

the top plate 7b of the support 17, audit it be desired -to obtain minute readings, or readings of smaller denominations than ounces, the kn-pper scale 23 is employed, and thel numerals on said scales represent ounces,while the subdivisions. thereof represent pennyweights, and in this case the pan-support 17 is adjusted so that the index-mark 28 thereon will register with the index-mark 82 on the top plate 7b of the support. 17.

`The use of the opposite side of the scale in weighin g according to the metric and apothecary systems will be understood from the foregoing description, and it will also be linder- ,stood that in the use ot the scale-weight 21 the said weight, serves as a pointer for all of the-separate scales 'on both sides of the scalebar, the said scales beingread from the front edge of said weight, or that edge thereof ad jalcent to the support of the scale-bar.

The weighing apparatus herein shown and described and as represented in Figs. 1 and 2fis made according to a scale,the transverse diameter of the top plate 7h beingsix inches,

while the total lengthof the scale-bar is eighteen inches and that `portion thereof which projects from the pivotal support being twelve inches, and in the construction of this apparatus the index-marks and"33y .of the avoirdupois'system on the top plate '7b o'f the scalesupport are'placed,respectively,

j three-eighths inch' and six inches from the pivotal support of `the scale-bar. The index-marks 31? and` 32 ot' troy system are placed, respectively, one-halt' inch and live and one-half (5) inches from the pivotalsupport of the scale-bar. opposite side of thiaislotV 7c the index-marks j 34 and 36,1which belongto the metric system, areplaced, respectively, one-sixth and one and seventenths (l-"6) inches from the pivotal support of the scale-bar, while the 7 vindex-marks f 35" and 37, which belong to `the'apothecary system, are placed, respectively', one-half and live and one-half (5%) j inches from the pivotal support of the scalesfo,

bar.

Of course theseiigures are not the resultof absolute measurementmbut they are approximate in all cases, and when placed as shown and described the operation' of the scale will -be sufficiently definite and correct forall practical purposes. v Inthe construction of-myimproved scale,

f however, the exact point at which the indexmarks on the top plate7b ofthe scale-support are placed may be absolutely determined, so as to cause the scale to operate `with exact certainty according to any of thefsystems and the miuutest readings desired. It will also be apparent that notwithstanding the fact that I have described the scale-bar herein shown and described as of a certain length y my improvement is applicable to all sizes and styles of scales workin g on the lever-and-fulcrum principle and my inventionis not lim,- ited to any of the dimensionsof the scale-bar On thev ork the other parts of the apparatus as herein shown and described.

The principle involved in the construction of my improved scale may also be employed in the construction of counting-machines and other machines of this class, and my invention is not limited to the use of this principle in a scale as herein shown and described, the main principle of this invention being the use of a pivoted slotted'bar, a screw mounted in said barand the opposite ends of whichvare provided with opposite threads, a support said support and through which one endot` said screw passes, said slide being threaded f to correspond with said screw, and a cou-uterbalance-weight mounted on the outer end of said bar and through which the other endof saidscrew passes, said vslide and said weight being adapted to move toward and from the pivotal supportnet` said bar according to the direction in which the screw isturned, and said slide being provided with a supplemental support which passes upwardly through the top of the main support, said top of the ymain support being also provided .with a longitudinal slot .over and parallel with the scale bar, substantially as shown` and described. v i

IOO

2. A scale comprising ahollow support, provided lwith aslot in the top thereof, `a scale-v bar pivoted insaid support at one side thereot and projecting therefrom', and extending thereinto parallelwithsaid slot, said scalebarbeing provided with alongitudinal slot,

and a screw placed therein, a supplemental support mounted on the bar within the main support and through which said screw passes, a counterbalance-weight mounted on the outer end of the bar and through which said screw passes, said screw being provided at its oppoplementalsupport and said counterbalance- `weight being correspondingly threaded, and

said scale-bar being provided on its opposite sides with a plurality of scales according to separate systems, substantially as shown and described.

y3. A scale comprising a hollow support, provided with a slot in the top thereof, a scalebar pivoted in said support at one side thereof and projecting therefrom, and extending ther'einto parallel with said slot, said scalebar being provided with a longitudinal slot anda screw placed therein, a supplemental j IIO.

vsite ends with opposite threads, and said supsupport mounted on the bar Within the main support and through which said screw passes, a countcrbalance-weight mounted on the outer end of the bar and through which said screw passes, said screw being provided at its opposite ends with opposite threads, and said supplemental support and said counterbalanceweight being correspondingly threaded, and said scale-bar being provided on its opposite sides with a plurality of scales according to the separate systems, and the top plate of the lnain support being provided on the opposite side of the slot therein With index marks which correspond with the separate systems on the scale-bar, substantially as shown and described.

4. A combination-scale adapted to weigh according to di [ferent systems of weights, said scale comprising a hollow support provided with a diametrical slot in the top thereof, a scale-bar pivoted in said support at one side thereof below the top thereof and projecting therefrom and thereinto parallel with said slot, a screw mounted in said scale-bar, a slide mounted on said scale-bar within said support and through which said screw passes, a counterbalauce-weight mounted on the outer end of the scale-bar and through which said screw passes, the opposite ends of said screw being provided with opposite threads, and said slide and said counterbalance-weight being similarly threaded, said scale-bar being also provided with aplurality of scales according to different systems of weights, and the top plate of the support being provided at the opposite sides of the slot therein with index-marks according to each of said systems, said slide being also provided with a supportwhich passes upwardly through the slot in the top of the main support, the opposite sides of which are provided with an indeX- mark, and said scale-bar' being also provided with a sliding Weight which operates as a pointer for each of the scales thereon substantially as shown and described.

5. An apparatus of the class described, comprising a support, having a diametrical slot in the top thereof, a scale-bar pivoted at one side of said support and projecting therefrom and extending thereinto parallel with and beneath said slot, said bar being provided with a longitudinal slot and ascrew mounted therein and provided at its opposite ends with opposite threads, a support mounted on one end of said screw and a counterbalance-weight mounted on the other end, said support and said weight being threaded to correspond with the ends of said screw on which they are mounted, said scale-bar being also provided with a plurality of scales according to different systems, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 2d day of May, 1901.

JOSEPH S. CORTELYOU. lVitnesses:

F. A. STEWART, F. F. TELLER. 

